// set up drop downs anywhere in the body of the page. I think the bottom of the page is better.. 
	// but you can experiment with effect on loadtime.
	if (mtDropDown.isSupported()) {

		//==================================================================================================
		// create a set of dropdowns
		//==================================================================================================
		// the first param should always be down, as it is here
		//
		// The second and third param are the top and left offset positions of the menus from their actuators
		// respectively. To make a menu appear a little to the left and bottom of an actuator, you could use
		// something like -5, 5
		//
		// The last parameter can be .topLeft, .bottomLeft, .topRight, or .bottomRight to inidicate the corner
		// of the actuator from which to measure the offset positions above. Here we are saying we want the 
		// menu to appear directly below the bottom left corner of the actuator
		//==================================================================================================
		var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 0, mtDropDown.reference.bottomLeft);

		//==================================================================================================
		// create a dropdown menu
		//==================================================================================================
		// the first parameter should be the HTML element which will act actuator for the menu
		//==================================================================================================

		//==================================================================================================
		// add a sub-menu
		//==================================================================================================
		// to add a sub menu to an existing menu object, call it's addMenu method and pass it the item from
		// the parent menu which should act as it's actuator. To add a submenu to the fourth item of a menu
		// called "theMenu", you would do theMenu.addMenu(theMenu.items[3])
		//==================================================================================================
				
		var menu1 = ms.addMenu(document.getElementById("mnu_productos"));
		menu1.addItem("<b>Nylacero 6</b>","eng-pro-nylacero6.htm");
		menu1.addItem("<b>Nylacero M</b>","eng-pro-nylacerom.htm");
		menu1.addItem("<b>Nylacero 2000</b>","eng-pro-nylacero2000.htm");
		menu1.addItem("<b>Nylalloy</b>","eng-pro-nylalloy.htm");
/*		menu1.addItem("<b>Agitadores</b>","pro-agitadores.htm");
		menu1.addItem("<b>Canglion</b>","pro-canglion.htm");
		menu1.addItem("<b>Duroplast</b>","pro-duroplast.htm");
		menu1.addItem("<b>Anker</b>","#");
		var menu1sub1 = menu1.addMenu(menu1.items[7]);
			menu1sub1.addItem("<b>Taquetes</b>","pro-anker-taquetes.htm");
			menu1sub1.addItem("<b>Grapas de Fijacion p/cable telefonico</b>","pro-anker-grapas.htm"); 
			menu1sub1.addItem("<b>Cajas Electricas</b>","pro-anker-cajas.htm"); 
*/

/*		var menu2 = ms.addMenu(document.getElementById("mnu_usos"));
		menu2.addItem("<b>Nylacero</b>","uso-nylacero.htm");
		menu2.addItem("<b>Agitadores</b>","uso-agitadores.htm");
		menu2.addItem("<b><b>Canglion</b>","uso-canglion.htm");
		menu2.addItem("<b>Anker</b>","uso-anker.htm"); 
*/

		var menu3 = ms.addMenu(document.getElementById("mnu_tips"));
		menu3.addItem("<b>Nylacero y Nylalloy</b>","eng-tip-nylacero.htm");
		menu3.addItem("<b>Tool Design</b>","eng-tip-diseno.htm");
		menu3.addItem("<b>Sawing</b>","eng-tip-aserrado.htm");
		menu3.addItem("<b>Drilling</b>","eng-tip-barrenado.htm");
		menu3.addItem("<b>Reaming</b>","eng-tip-rimado.htm");
		menu3.addItem("<b>Threading and Taping</b>","eng-tip-roscado.htm");
		menu3.addItem("<b>Turning</b>","eng-tip-torneado.htm");
		menu3.addItem("<b>Milling</b>","eng-tip-fresado.htm");
		menu3.addItem("<b>Filing and Grinding</b>","eng-tip-limado.htm");

/*		var menu4 = ms.addMenu(document.getElementById("mnu_inventario"));
		menu4.addItem("001","#");
		menu4.addItem("002","#"); 
*/

		//==================================================================================================
		// write drop downs into page
		//==================================================================================================
		// this method writes all the HTML for the menus into the page with document.write(). It must be
		// called within the body of the HTML page.
		//==================================================================================================
		mtDropDown.renderAll();
	}